Clutch mechanism for reversing gear



sept. 4, 192sv 1,683,527@

J. C. CARLTCN CLUTCH MECHANISM FOR REVERSING GEAR v A f Sept, 4, 192s. 1,683,528

J. C. CARLTON CLUTCH MCHANISM FR REVERSING GEAR Filed April 25, 1924 ssnelets-sneet 2 l SI1/wanton 3M o W Sept. 4, 1928.

J. c. cARLToN CLUTCH MECHANIsM FOR REvERsING GEAR Filed April 25, 1924 3 .SheetsmSlieet Patented Sept.' 4.1928.-

UNITED; STATE-s inrralalA OFFICE. A

'JACK C.

CARLTON, or cmcrmwixr, OHIO, ASsIGNon To THE CARLTON MACHINE Toon comm, or' GmcnNaTr, OHIO, A.' CORPORATION 'or OHIO..

CLUTCBME'CHANISM roisanvnasme GEAR Y Application med pril 2s, 11524.. serial-No.. 708,555. i

and driven'members are held compressivelyl together, by means of levers carried by one ofv said members. s

Another object o my invention is to pro.- vi'de a frictionclutch inwhich; the driving. and driven members are held compressively together b'y levers and are retracted by ten.

ion springs all carried by one of said memers.

Another object of my invention is to pr vide 'a very eiicient quick change reversing'L gear transmission vfor'high speeds with the elements compactly combined.

`IOther objects and .advantages relate to the utilization .of the 'clutches for. reversing gearing mechanism, for alternatel transl mittingly connecting a set of reversing gears, with the clutches* and reversing gears-mount- 'ed upon asleeve or spindle,'all of which will be more fully set forth in the description. of the accompanying drawings, forming apart of this specification, in which drawings like reference characters denote f corresponding parts throughout the several views, of which: l 'j l Figure 1 is a side,. sectional view.

Figure 2 is a section on line 2 2, of Figi.

Figure 3 is. a planview with a portion' ofv the housing .broken away. Figure 4 is a' section on line l1---4, of Fig. 1. Figure 5 is a section on Fig. A L Y Figure 6 is a side section showing a modiyfied embodiment of my invention. FFigure 7 is -a section on lineAZ-J?, of 41g. v

My-clutching and reversing comprises aA housingpa sleeve spindle`jur-= naled'in saidhousmg withball bea am. a

Y .a splined l eonnection'between the two.

driving sima inside of Said Spindle and Splined thereto, two opposing bevel gears mounted rotatably on said spindle, a third bevel gear in mesh with the o pbsing bevel gears, clultch members and rlct'ion discs adapted to' engage said opposing bevel, gears, fixed collars on said spindle and leversl carried by said clutch members adapted to push said clutch-members away-from saidjflxedV -co1lars toward said bevel gears.

In the device shown in Figure 1 the levers are actuatedl by shifter collars. attached to-l v -gether and so spaced that only one bevel..

. gear can bel clutched at.' a time.`

In' F'gure 6 the levers are" actuated by a key of. vsuch length that only one bevel gear can lie-clutched 'at' a time.

Springs are employed to retract theclutch `member and the opposing 4bevel gears are` f providedwith hubs 'around which extends a brake band.. The shifter collars arejoined by a rod on. which is mounted a cam adapted to. tighten said brake Iband when the clutchmembers'are. not functioning, i. e., in .neutral., Thusll provide a clutching reversing mechanism as a compact unit.'

'More specifically l'provide a housing'l in which .is journaled a sleevespindle l2 the bearings 3 of said spindle beingof the ball bearing raceway type.. Through this spindle a concentric p ower or driving shat'd passes land the driving shaft and. spindle together nim.

. The. tudinalA ribs 5, in this case four in number, and the central portionof 'the spindle is provided with corrspondinlg'ribs 6 'orm'rlilg e spindle 2 is counterturned in order to'secure the parts mounted thereon from longitudinal motion. Near the center of said spindle are two opposing bevel gears 7 adapted to rotate reely on the spindle and provided with .suitable anti-friction bushings 84 and.

' collars 9... These bevel gears are .provided with hub portions 1:0 extending toward one another, .outwardly extending .hub portions4 '11 andshoulder-portionslZ. .'lhe gears also have oil. ducts.-13, InA mesh 'with both of these 'bevel gears is a third bevel .gear 14 se cured-to ashat 15 erpendic'ularto theV first comprise thepower element of my mecha Y i zfg anv'ingshaa is provided with iengii 0 v*shaft and secured t eretofby means 'of adisc.

le screwed lontelthe fend .oeaid shaft 'This 'lglear and. shaft are also journaled in the gears 7 are a plurality of friction rings 21 alternately secured by nieans of teeth 22 to the sleeve portion 19 of the clutch member and the hubv 1.1 of the bevel gear. These rings are preferabliy of metal and alternate rings have secure to `.their surfaces ray-A belsltos rings 23 .which are slightly compress1 e. clutching members and thef bevel Thus friction clutches -between the gears are constituted;

- Between the ball bearing raceways and,

the :hubs of the.clu'tch member are leverage abutments, 1n this case adjustable collars 24 secured on the. spindle against -lon 'tudinal 4.the clutch members 18 are mounted4 levers y `vers are preferably of thelbell crank motion. In-recesses 25 1n the hu s .20 of 26;,inthis case three. in number. These leand have vpins 27 as their fulcrums.

' end of each of said levers pushesjaga'inst one ofthe fixed collars or abutmentsnd the other end of each of said levers extends .through the outer cylindricalsurface of the;

clutch hub.

About said clutch hubs are fshifter collars 28 of hardened metaladapted to be moved i extending ends of said o t 4members against the friction rings,

' the thrust longitudinally on` said hubs and depress the levers, vcausing' the ends of'said levers to .push against` e adJustable collars and force the clutch thereby .Land

clutching .the clutch members to .er- These clutch` members-are retracteeth vby means of springs 29.0 o

of theilevers also'carri ysltllll.' clutch ese "rings are' .located in 'l (ylmdllcl. r 30 111 the clutch hubs and press the anti-frictio`n collars 9s which are held secure against longitlldinal motion ,by the coun of.` thev spindle'2.`- The shifterl collars. are .provided with grooves 31 in their c lindrical `surfaces intowhich t the arms o yokes4 3 2. These yokes are mounted-on a shifter vrod 33 which has its ends engaged in'v sockets 34 in the .housing 1'1. These yolres 32 are so spaced on the shifter rod 33 that onlyI one bevel 7 can be clutched at a time.

At ecenteroftheshifterrodsablock 35 having an 'oltwardly extending cylin-e drical ro'ection 36.-. Extendin verticall .......s .ig y elhousing lis a controlling or clutching reversing motive power is tache 'traversed-by a bolt 49 adjustably securable' the .bloc

- tuating means keyways 58 are cut through Lacasse actilating Arod -37 to which lv.the original bythe operator of the machine. S to the top of said'` rod and held theretobymeans of bolts 38 is an arm 392 .This arm. '7u

te minates in a yoke40 the arms of which ydlre embrace the cylindrical extension 36 of the block 35 onA the shifter rod 33. Thus, when the .actuating rod 37 is rotated the Y shifter rod 33is translated and one or the M other of the clutchesfthrown into'or out of engagement.

. Aboutthe hubs .10 of the opposing lbevel so gears? is a flexible brakeband 41 secured at its ends to a rock lever 42 by means of foldin over the ends ofthe band .into eyelets43 adpted to fit over pinsL44 on .the rock lever .42. Between this band and the hubs of the 'an gears themselves is a'second flexible 'band of braking-material 45 which maybe ref placed as 1t wears out. This rock lever 42 1s ivotally mounted on a rod 46 secured by sp 't ins 47 in^a bracket 48 which is at 90 d) to the housing 1. The rock lever is.

b a lock nut and the end of this bolt is f adapted tocontact onesurface of the block e, shifter rod 33.l .This surfaceof ne constitutes two inclined surfaces- 51 forming an apex in/the centerv and thus rendering. the surface a cam, sothat-'when the shifter rod and-block -app'roachtheir .center the rock lever is tilted and the brake me band it tightened. thereby bringing the bevelv gears to a Sto?. v y l .i The face) o the block .opposite the cam surface is provided with afcentrally located@ v groove 52. A detent or wedge--sl id8b1y.xmrsl mounted in a bracket '54 is ressedagalnst. the surf of the block-and-into the groove l when in position by means cfa coil spring 55 under sli ht tension. This device 1s merelyI to ena le the-operator of .the ma.. )im

chine easily to locate the dead center or neutral position of .the

elmhnand: 1re vel-sing mechamsm.

. V-Alternate shifting mechanmx.. Theembodimentfof-m "invention shown i Sand 7 is `to that shown inthe first fvevigures except that theT hubs of the'bevel gears -and the sleeves .of the. clutch members are omitted and the lever acu@ varied.y .About :gspindle'and ea e'hevelgeararetively, and their'bushings, are sleeves 56 'J heldjto sard spindle bykeys. 57. Additional.:

these sleeves 156I ilu ind through theanti-friction collars, ywayg clutch members-in ,which lever! .'j co nding infunction'tojlevere 26.. In these keyway's- 5 8 are 'ne keys 61 with beveled surfaces 62 at their opposite ends adapted to operate the levers 60 selectivel About the sleeves 56 and secured to t e actuating keys'is' a shifter collar 63 b means of which the keys are shifted an clutching accomplished. The sleeves have longitudinal slots 64 above the keyways 58 in order to permit the actuating keys 61 to be `shifted by the collar from one side to another. Thus I provide a compact clutching and reversing mechanism for radial drills adapted to be moved horizontally along a drivin shaft and providing lever actuated and spring retracted selective friction clutches. When the clutch mechanism is in idle or. neutral positionv the clutch shifting rod '37 Apositions the arm 39 connected upon the end of the rod at right angles tothe actuating rod 33, bringing the brake operating block 35, fixed on the actuating rod 33, at a point whereb l its cam surfaces will have rocked the brahe lever 42 a suicient degree to draw the brake band 41 and ap ly the appropriate braking pressure upon tlie brake drums or hubs 1 0 of the reversing gears 7. Moving the actuating rod 33 to its extreme right orleft positions for a clutch power control releases Kat the brake lever 42 and brake band. vThe brake istherefore always applied when the shifting mechanism, reaches a neutral position so that the rotation of the reversing gears is larrested Wherever the clutch is shiftedlfor a reversing or stopping control. This gears in changing from 'one direction of rotation to the reverse,

- or imparting any-overrun motion to the driven 7ge'iz1r 14 meshing with the reversing ars The actuating rod 33 connecting with the 'clutch controlling collars 28"-28 moves `the collars in alternate directions for alternate control ofthe clutches or friction discs.

As the clutches'are the duplicate of one another this operation is the same, except' relatively alternate, thus for a clutching operation the clutch collar is moved to engage the same over the free ends of the series of levers 26, pivoted within the hub 20. of the clutch member 19 depressing the levers causing the same to engage with the stop collar 2 4 on`the sleeve 2 forcing the clutch member v 19 forwardly for compressing the friction discs transmittingly connecting the sleeve 2 with the selected reversing ear 7 Moving the collar 28 in an opposite irection releases the levers 26 permitting the clutch member to be moved under the releasing pressure of the springs 29, releasing v.the frlction disc compression. The stop collarsv4 24 are adjustable upon de ree of disc compression.

avin described my invention, I claim: In a gi'riction clutch, a sleeve rotatably journaled, a first clutch member journaled upon said sleeve, and confined thereon against axial displacement, a second clutch member, slidableV upon and rotatable with said sleeve, friction discs interposed between said clutch members, and housed thereby, a plurality of levers mounted. in a hub of said c second clutch member, for moving said second clutch member to bring the clutch memthe sleeve 2 for regulating the bers and discs-into compression, anadjustsleeve, against Awhich 'non o. CARLTON@ means slidable axil 

